package com.xbn.netty.codec;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;

/**
 * @author XBN
 * @date 2020/10/19 14:30
 * @email 78742541@qq.com
 */
public class NettyClientHandler  extends ChannelInboundHandlerAdapter {

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
            //发送一个Student对象到服务器
            //不能直接new，要按照这种方法
        StudentPOJO.Student student = StudentPOJO.Student.newBuilder().setId(6).setName("张三").build();
        ctx.writeAndFlush(student);
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf buf= (ByteBuf) msg;
        System.out.println("服务器回复的消息:"+buf
        .toString(CharsetUtil.UTF_8));
        System.out.println("服务器端的地址:"+ctx.channel().remoteAddress());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {


        cause.printStackTrace();
        ctx.close();
    }
}
